The term 'THAT's What You Think' is a phrase used to express disagreement with someone else's OPINION. The crossword solutions for this phrase are OPINION (7 letters), HAH (3 letters), ASIF (4 letters), and IBEGTODIFFER (12 letters). OPINION is a noun THAT refers to a belief or judgment about a situation or event, while HAH is an interjection used to express surprise, disbelief, or scorn. ASIF is an acronym for 'as if, ' which is used to express disbelief or doubt. Finally, IBEGTODIFFER is a phrase used to politely disagree with someone else's OPINION.